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Vol 10, No. 12 – 21 March 1975

Project Dates

March 11, 1993 to March 14, 1993

Project Location

Eastern U.S.

Project Description

This case contains data from the well-known "storm of the century", which devastated the eastern third of the United States in mid-March 1993.

Data Access for COMET Case Study 001

Project Dates

March 27, 1994 to March 28, 1994

Project Description

This case spans the tornadic outbreak on Palm Sunday (27 March 1994) in Alabama. Gravity waves were triggered with deep convection that developed in northeastern Texas. The waves modulated mesolows that developed along a cold front and acted to force the severe convection in Alabama.

Objectives

This case was presented during the COMAP-97 (COMET Mesoscale Analysis and Prediction) Course and was developed in collaboration with Professor Steve Koch of North Carolina State University. The case was also presented at the joint NWS-NCSU workshop on 11-12 Aug 1998: "Cold Fronts Aloft, Gravity Waves, and Mesocyclones in the Southeastern United States".

Data Access for COMET Case Study 012

Project Dates

July 3, 1995 to July 5, 1995

Project Description

On this day, the combination of abundant moisture, an unusually intense synoptic scale trough and potentially strong jet dynamics resulted in the development of tornadic thunderstorms

Objectives

The data used for this were presented as a laboratory exercise during Satellite Mesoscale Meteorology residence courses held at COMET.

Data Access for COMET Case Study 016

Project Dates

October 17, 1996 to October 18, 1996

Project Description

This case covers a storm that is an example of "classical" cyclone development with some structure similar to the Norwegian conceptual model of storm development.

Objectives

This case was chosen to provide an example of a case that contains most of the classical structures in many synoptic systems. It is especially useful for beginning level students.

Data Access for COMET Case Study 014

Project Dates

August 7, 1997 to August 8, 1997

Project Description

Case 017 is the latest in a series of convective cases from different regions of the United States.This case focuses on the unique aspects of convective storm initiation and subsequent evolution in the southwest monsoon environment

Objectives

This case was used in an NWS Western Region teletraining exercise entitled; Anticipating Convection in the Desert Southwest: A Case Exercise.

Data Access for COMET Case Study 017

Project Dates

February 22, 1998 to February 24, 1998

Project Location

Southern California

Project Description

A strong winter storm system moved over Southern California and brought heavy rain as tropical moisture fed into the system.At the same time, an intense storm system moved across Florida with tornadoes forming over the central part of the state.

Objectives

This case was built to highlight the performance of the Eta model in predicting the Southern California storm and to examine the need for high-resolution models in areas of complex terrain.

Data Access for COMET Case Study 013

Project Dates

April 7, 1998 to April 9, 1998

Project Description

The day of 8 April 1998 was a very stormy one for Mississippi, Alabam and Georgia. Showers and thunderstorms were widespread over SE Alabama and S Georgia early in the day, while widespread severe storms plagued north Mississippi, Georgia and hardest hit Alabama that afternoon and evening. NCDC has 224 reports of severe weather from these states for 8 April, including 11 tornado reports with 2 being F5 in strength. There were numerous reports of hail, most over an inch in diameter, several up to 2.75 inches in diameter.

Objectives

Allow in depth investigation of mesoscale effects on tornadogenesis.

Data Access for COMET Case Study 038